[Darkroom] Hello and looking for liquid bromine

Kelly hurtstotouchfire at gmail.com
Fri Jul 15 14:45:09 PDT 2011


The noisebridge darkroom fan is overkill for standard film development
but not strong enough for something you would normally use a chemical
hood for. We're not sure on exact CFM.

Noisebridge does not have roof access for anything other than
installing antennas. We also don't have a chemical locker. There is a
fridge in the darkroom.

It's probably inappropriate to keep seriously toxic chemicals like
mercury or bromine at noisebridge long-term.

-Kelly

On Fri, Jul 15, 2011 at 13:27, Christian Rice <clrice at gmail.com> wrote:
> Handling (and heating) mercury should usually occur outdoors, or in a
> properly-ventilated fume hood, same for bromine.  I'm not sure how many CFM
> the fan in the darkroom evacuates, or where it goes--anyone know those
> details?
>
> Does Noisebridge have a chemical locker, or secure roof access where a
> storage unit might be placed?
>
> And yes, I offered to do a demo in the fall.  I'm still building some
> portable bits to make that possible.
>
> On Thu, Jul 14, 2011 at 8:30 PM, Jasmine Strong <jasmine at electronpusher.org>
> wrote:
>>
>> One word of warning-  can you be super super careful with mercury around
>> the darkroom?  Mercury fogs film.
>>
>> -J.
>>
>> On 14 Jul 2011, at 18:35, Ben Rupert wrote:
>>
>> > Hey everyone, sorry I disappeared recently.  Been a rough couple weeks.
>> > Hopefully I can get back to this soon, I haven't forgotten about it.  I
>> > see that there are some chemicals on the wiki, it's a good start and we
>> > should be able to order everything people have asked for.  We can add
>> > more as well or go with what's there.
>> >  Also Christian, I believe that you offered to do a Daguerreotype demo
>> > sometime this fall.  I would be quite interested.
>> >
>> > Ben
>> >
>> > On 07/06/2011 01:27 PM, Kelly wrote:
>> >> Your wishlist goes here:
>> >> https://www.noisebridge.net/wiki/Darkroom/Chemical_Purchasing
>> >>
>> >> Everyone who wants to order chems should add some so that Ben can
>> >> assemble a reasonable first shopping list. We need to also have
>> >> "educational" uses for them.
>> >>
>> >> -Kelly
>> >>
>> >> On Wed, Jul 6, 2011 at 11:49, Ben Rupert <meowdip at gmail.com> wrote:
>> >>> I did make it to Noisebridge and the bromine is on the shelf with
>> >>> other
>> >>> chemicals above the developing table/sink.  I'm on my phone now so
>> >>> don't
>> >>> want to type a lot but will respond to the other questions and
>> >>> comments
>> >>> tonight.
>> >>>
>> >>> Ben
>> >>>
>> >>> On Jul 6, 2011 11:45 AM, "Christian Rice" <clrice at gmail.com> wrote:
>> >>>> Ben, a few questions for you:
>> >>>>
>> >>>> - Is there anything you need from me to facilitate the opening of an
>> >>>> account, any initial order requirement? If so, I will supply $$ for
>> >>>> some
>> >>>> sturdy containment vessels and more bromine.
>> >>>>
>> >>>> - did you happen to make it by Noisebridge on Tuesday?
>> >>>>
>> >>>> - chemical ordering: when I look at liquid bromine, the published qty
>> >>>> measurement tends to vacillate between mg and ml. There tends to be
>> >>>> 99.5%
>> >>>> ACS (mg), 99.8% (mg) and 99.998% (metals basis, ml). The pricing and
>> >>>> packaging of the lower two (looking at Alfa's website) vary oddly,
>> >>>> and it
>> >>>> seems the middle ground is the best price point (item #00905, 250mg
>> >>>> or
>> >>>> 1kg),
>> >>>> by far. Can you shed any light on what's going on?
>> >>>>
>> >>>> - what kind of cap would you recommend on a glass bottle of this
>> >>>> stuff--PTFE, teflon-lined, or something else?
>> >>>>
>> >>>> Sorry to pester, my particular needs may not fall entirely in line
>> >>>> with
>> >>>> the
>> >>>> normal darkroom activities. But then again, it would be my pleasure
>> >>>> to do
>> >>>> a
>> >>>> Daguerreotype demonstration at Noisebridge in the fall, if there was
>> >>>> interest. It might go well coupled with other chemistry demos, as so
>> >>>> much
>> >>>> of the process deals with basic elements (copper, silver, gold,
>> >>>> iodine,
>> >>>> bromine, mercury). In fact, it would be really awesome to have a
>> >>>> chemist's
>> >>>> commentary to augment my largely practical understanding of the
>> >>>> process.
>> >>>> Could make a neat educational video...
>> >>>>
>> >>>> By the way, I do have a fairly large amount of Hg--maybe more than
>> >>>> I'll
>> >>>> use
>> >>>> in my lifetime. The longer I've had my feelers out for such
>> >>>> chemicals, the
>> >>>> more people come out of the woodwork with their old carburetor sync
>> >>>> kits
>> >>>> they want to get rid of. One guy gave me a couple pounds in a single
>> >>>> jar...
>> >>>>
>> >>>> On Fri, Jul 1, 2011 at 5:19 PM, Ben Rupert <meowdip at gmail.com> wrote:
>> >>>>
>> >>>>> Hit reply rather than reply all, see below:
>> >>>>>
>> >>>>> On 07/01/2011 05:09 PM, Ben Rupert wrote:
>> >>>>>> I'll be over to noisebridge during the day on Tuesday. I'll bring
>> >>>>>> the
>> >>>>>> bromine then and leave it in the darkroom and well labelled. I'm
>> >>>>>> not
>> >>>>>> sure if we would have to have some sort of paperwork that we don't
>> >>>>>> have
>> >>>>>> to buy the mercury when we do want more, but I think everything
>> >>>>>> else
>> >>>>>> would be fine.
>> >>>>>> As for web pages to look through for chemicals, try these:
>> >>>>>> http://www.sigmaaldrich.com/united-states.html
>> >>>>>> http://www.fishersci.com/ecomm/servlet/home?storeId=10652
>> >>>>>> http://www.alfa-chemcat.com/en/gh100w.pgm
>> >>>>>> http://www.acros.com/
>> >>>>>>
>> >>>>>> I'm not going to try to set up accounts at all of these places, but
>> >>>>>> let's get together some lists of things we want and then figure out
>> >>>>>> one
>> >>>>>> or two to order from.
>> >>>>>>
>> >>>>>> Ben
>> >>>>>>
>> >>>>>> PS. we will probably need some paperwork proving we are an
>> >>>>>> educational
>> >>>>>> non-profit. This exists, correct?
>> >>>>> _______________________________________________
>> >>>>> Darkroom mailing list
>> >>>>> Darkroom at lists.noisebridge.net
>> >>>>> https://www.noisebridge.net/mailman/listinfo/darkroom
>> >>>>>
>> >>>
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>> >>>
>> >>>
>> >>
>> >
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